Pryor / Oklahoma / United States
National Gypsum Company is a building products manufacturer and one of the leading gypsum wallboard producers throughout the world. The fully integrated company produces enough wallboard each year that if it were placed end-to-end, it would span the earth 14 times. National Gypsum Company also provides a full line of interior finishing products that include joint compounds, tap and plasters. The company s cement board product line is supplied to many customers in the United States and foreign countries. Headquartered in Charlotte, N.C., National Gypsum Company has more than 50 locations, including laboratories; mines and quarries; paper mills; wallboard and interior-finishing products; and cement board plants and sales regions. Since becoming a private company in 1995, it has invested more than $1 billion in the business, including new plants, equipment and technology. National Gypsum Company maintains operations in Pryor, Okla.
